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Data-driven control of LVDC network converters: Active load stabilization

Data-driven control of LVDC network converters: Active load stabilization
Data-driven control of LVDC network converters: Active load stabilization
This paper addresses the (model-free) data-driven control of power converters, acting as distributed generators, in low voltage direct current (LVDC) networks (e.g. DC microgrids, DC distributed power systems, DC buses wit multiple sources and loads, etc.). Since traditional stand-alone control design, cannot guarantee stability when converters are connected to a network, it is proposed a deterministic solution that does not require the network model– an approach purely based on measurement data. This is a suitable way to overcome common issues when using a model-based approach, e.g. the use of an excessive number of variables and equations, the presence of un-modeled dynamics, unknown parameters and/or the lack of first principle model equations. To corroborate the advantages of the proposed approach, the present work addresses an extreme but also realistic scenario: weak networks with active loads, such as constant power loads (CPLs). It is also shown that the proposed scheme guarantees stability in a rigorous deterministic way– using a Lyapunov approach based on coefficient matrices directly constructed from data. Simulation results using a multi- bus LVDC distribution network, based on PSCAD/EMTDC, are provided as proof of concept.
1949-3053
Ruiz-Martinez, O.F.
7b532c9b-47b1-43d4-bfa3-7715d25cb53c
Mayo Maldonado, J.C.
cd0eae1f-0547-4ded-b72a-299660ea1a03
Escobar, G.
c663e12c-fcb7-4dc9-98f2-09aca37fc5a3
Frias-Araya, B.A.
c853b751-be61-4ba2-a3bf-656923db6af2
Valdez-Resendiz, J.E.
ce6db6a9-99c1-4e04-b015-15cc3684c951
Rosas-Caro, J.C.
fe443fd4-bc59-41c5-8a03-118abeb09ff7
Rapisarda, P.
79efc3b0-a7c6-4ca7-a7f8-de5770a4281b
Ruiz-Martinez, O.F.
7b532c9b-47b1-43d4-bfa3-7715d25cb53c
Mayo Maldonado, J.C.
cd0eae1f-0547-4ded-b72a-299660ea1a03
Escobar, G.
c663e12c-fcb7-4dc9-98f2-09aca37fc5a3
Frias-Araya, B.A.
c853b751-be61-4ba2-a3bf-656923db6af2
Valdez-Resendiz, J.E.
ce6db6a9-99c1-4e04-b015-15cc3684c951
Rosas-Caro, J.C.
fe443fd4-bc59-41c5-8a03-118abeb09ff7
Rapisarda, P.
79efc3b0-a7c6-4ca7-a7f8-de5770a4281b

Ruiz-Martinez, O.F., Mayo Maldonado, J.C., Escobar, G., Frias-Araya, B.A., Valdez-Resendiz, J.E., Rosas-Caro, J.C. and Rapisarda, P. (2019) Data-driven control of LVDC network converters: Active load stabilization. IEEE Transactions on Smart Grid. (doi:10.1109/TSG.2019.2949259).

Record type: Article

Abstract

This paper addresses the (model-free) data-driven control of power converters, acting as distributed generators, in low voltage direct current (LVDC) networks (e.g. DC microgrids, DC distributed power systems, DC buses wit multiple sources and loads, etc.). Since traditional stand-alone control design, cannot guarantee stability when converters are connected to a network, it is proposed a deterministic solution that does not require the network model– an approach purely based on measurement data. This is a suitable way to overcome common issues when using a model-based approach, e.g. the use of an excessive number of variables and equations, the presence of un-modeled dynamics, unknown parameters and/or the lack of first principle model equations. To corroborate the advantages of the proposed approach, the present work addresses an extreme but also realistic scenario: weak networks with active loads, such as constant power loads (CPLs). It is also shown that the proposed scheme guarantees stability in a rigorous deterministic way– using a Lyapunov approach based on coefficient matrices directly constructed from data. Simulation results using a multi- bus LVDC distribution network, based on PSCAD/EMTDC, are provided as proof of concept.

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e-pub ahead of print date: 24 October 2019

Identifiers

Local EPrints ID: 435229
URI: http://eprints.soton.ac.uk/id/eprint/435229
ISSN: 1949-3053
PURE UUID: 022af006-3d95-4b2f-88dd-88f7440b9ad3

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Date deposited: 28 Oct 2019 17:30
Last modified: 16 Mar 2024 04:47

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Contributors

Author: O.F. Ruiz-Martinez
Author: J.C. Mayo Maldonado
Author: G. Escobar
Author: B.A. Frias-Araya
Author: J.E. Valdez-Resendiz
Author: J.C. Rosas-Caro
Author: P. Rapisarda

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